Finding the Third Proportional to 61,499.25 and 128,223

Step by Step Solution

1. Step 1: Write the proportion equation
   61,499.25 : 128,223 = 128,223 : x
2. Step 2: Convert to fraction form
   61,499.25/128,223 = 128,223/x
3. Step 3: Cross multiply
   61,499.25x = 128,223 × 128,223
4. Step 4: Simplify right side
   61,499.25x = 16,441,137,729
5. Step 5: Solve for x
   x = 16,441,137,729/61,499.25
6. Step 6: Final answer
   x = 267,338.83